Doomed to Collapse?

[Yul]

http://news.bbc.co.uk/2/hi/sci/tech/2346907.stm

[SpacedOut]

sigh - my turn to address yet another "Post-and-Run"

Yul - your point in providing the link is?

[Silas]

What's wrong with an occasional post and run that links to interesting science articles?

Silas

[Jim]

On 2002-10-22 15:31, Silas wrote:
What's wrong with an occasional post and run that links to interesting science articles?

Like Spaced Out says, what's the point? At least give us some idea of why the link is being posted.

"Hey, here's a (neat)(funny)(stupid)(intelligent) article."

"This guy (makes sense)(is fullabull)."

Something to tell us why we should click it.

[SpacedOut]

On 2002-10-22 15:31, Silas wrote:
What's wrong with an occasional post and run that links to interesting science articles?

Nothing - I just wish people would state the the reason they are posting a link - good or bad. We have seen may times where a poster will post and run in an attempt to just stir things up - Probably isn't the case here so my response was a little too terse. My apologies.

BTW - It is an interesting article.

<font size=-1>[ This Message was edited by: SpacedOut on 2002-10-22 15:53 ]</font>

[samsara15]

Seems to me that this article is essentially close to mainstream thinking, albeit somewhat speculative. Since we know so litle about the alleged 'Dark Matter' or 'Dark Energy', it's difficult to draw conclusions about what their properties are or will be, so I would label this article interesting speculation.

[Superstring]

It doesn't matter to me if someone gives a note about a link provided or not, though I'd probably prefer the latter. The article was rather interesting, though it seems a bit speculative in ways. We have yet to have a large amount of evidence that the dark matter will reverse itself as they claim. Oh well, we have 10-20 billion years to think about it...

[Kaptain K]

Superstring,

I realize that you are new here (nothing wrong with that, we were all new here once). The problem is that "post and run" is Yul's modus operandi. He posts a link, with no explanation and disappears. He doesn't stick around to discuss it (this is a discussion board). After months of this, it gets a little old. All we are asking is:
1) Give a reason for posting a URL.
2) Stick around to discuss it.
Is that too much to ask?

[jeffocal]

On 2002-10-22 14:51, Yul wrote:
http://news.bbc.co.uk/2/hi/sci/tech/2346907.stm

Yul

In Chapter 26 Shadows derives a cosmological that defines dark energy in terms of the energy loss associated with the redshift. It also postulates the universe will enter a contraction phase as the article "Doomed to collapse" suggests

"New insights into the mysterious "dark energy" that appears to be pushing the universe apart suggest it may eventually lose its power.

Turning away from the dark side, the cosmos will then collapse, as if everything was falling into a black hole, say researchers."

For your convenience I've posted the section of
<a href=http://home.attbi.com/~jeffocal/chapter26.htm> Chapter 26 </a>that defines the mechanism Shadows postulates is responsible for dark energy.

I'd appreciate your professional comments.

Jeff



Presently the universe appears to be in a state of general expansion due in part to the lengthening effect on space that Shadows associates with the energy loss of red shifted photons. However someday this expansion will crease and it will enter a contraction phase. This is due to primarily to the additional gravitational attractive forces that the mass component or "dark matter" associated with space adds to the total mass of the universe. The velocity of contraction will increase until the expansive forces associated with the heat generated by the compression of the mass of the universe equals the gravitational contractive forces associated with the mass. At this point in time the total energy of the universe would equal to the total mass equivalent of that energy or E=mc^2. Form that point on the velocity of the contraction will slow and be maintain by the momentum associated with the remaining mass component of the universe. However, after a certain point in time the conversion of mass to heat energy generated by the contraction will result in the remaining mass to disassociate into photons that will then be able to travel great distances unimpeded. Earlier the physical lengthening effect of red shifted photons was shown to be directly related to the distance they travel. Therefore, because a photon can travel greater distances unimpeded at this point in time the lengthening effect of the energy loss associated with the red shift will be maximized. Space will stop contracting and begin to expand when the accelerating force generated by the lengthening of space exceeds the force generated by the momentum of the remaining mass. (This is the mechanism responsible for the recently observed force called "Dark Energy" that may be causing the accelerated expansion of the universe.) It was also shown earlier the lengthening of space associated with the energy loss red shifted photons is in part due to an increase in the mass component of space were this lengthening has occurred. Therefore, this accelerated expansion will continue until the total attractive gravitational forces caused by the mass generated by the energy loss of red shifting of photons again exceed the total momentum of quantum particles in the universe. At this point, the contraction phase will begin again. Since the universe is a closed system, the amplitude of the expansions and contractions will remain constant because the law of conservation of mass energy dictates that the total mass / energy of a closed system remains constant. This results in the universe experiencing in a never-ending cycle of expansions and contractions of equal magnitudes. Particle and star formation would not begin in the expansion phase until space had expanded enough to allow enough of the photons energy to be converted back into the mass that Shadows associates with space to support their formation.

[dschon]

ah, 10 to 20 billion years...
humanity needs to prepare faster...
so much for 10^10^79 years of doing nothing.

[Superstring]

On 2002-10-23 00:12, Kaptain K wrote:
Superstring,

I realize that you are new here (nothing wrong with that, we were all new here once). The problem is that "post and run" is Yul's modus operandi. He posts a link, with no explanation and disappears. He doesn't stick around to discuss it (this is a discussion board). After months of this, it gets a little old. All we are asking is:
1) Give a reason for posting a URL.
2) Stick around to discuss it.
Is that too much to ask?

Ok I see what you are saying now. I thought it was just this one time, which IMO shouldn't be too much of an issue. I haven't noticed many of Yul's posts, but if he does indeed do this all the time than I have to agree with you, he should stop it.

[jeffocal]

[quote]
On 2002-10-23 17:04, Superstring wrote:

All we are asking is:
1) Give a reason for posting a URL.
2) Stick around to discuss it.
Is that too much to ask?

But no one not even Yal should run from the Shadows because the <a href=http://home.attbi.com/~jeffocal/shadows.htm> Shadows </a> in an earlier article has
1. Given a reason for posting of the URL and 2) will stick around to discuss it.
Is it too much to ask for a discussion involving its merits.

Jeff [img]/phpBB/images/smiles/icon_smile.gif[/img]



<font size=-1>[ This Message was edited by: An Imagineer on 2002-10-23 18:36 ]</font>

[Superstring]

I have to agree with you Imagineer. Except you quoted Kaptain K, not me. [img]/phpBB/images/smiles/icon_wink.gif[/img]

Oh and welcome to BABB. Look forward to more of your posts.

[jeffocal]

On 2002-10-23 18:49, Superstring wrote:
I have to agree with you Imagineer. Except you quoted Kaptain K, not me. [img]/phpBB/images/smiles/icon_wink.gif[/img]

Oh and welcome to BABB. Look forward to more of your posts.

Thankyou Superstring for welcoming me to the BABB. I also hope you will accept my apologize for misquoting you.

Jeff

[Superstring]

On 2002-10-26 08:48, An Imagineer wrote:

Thankyou Superstring for welcoming me to the BABB. I also hope you will accept my apologize for misquoting you.

Jeff

happens all the time. [img]/phpBB/images/smiles/icon_smile.gif[/img]